The grain stability of calcined petroleum coke determines the resistance to breakdown of +4 mm particles used in the manufacture of carbon anodes for use . Designation: D/DM − Standard Practice for. Collection and Preparation of Coke Samples for Laboratory Analysis1 This standard is issued under the. ASTM D Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis.

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Because of the variability of coke and the wide variety of sampling equipment, caution must be exercised in all stages of sampling, from system specifications and equipment procurement to equipment acceptance testing and actually taking the final sample. Search book title Enter keywords for book title search. Values are state ins SI units when inch-pound units are not used in practice. Combining values from the two systems may result in non-conformance with the standard.

ASTM International – Standard References for ASTM D / DM – 11

Special apparatus can be purchased. Non-condensable gases may be collected and v346 but more usually are simply burned to waste. A simple apparatus for these tests is shown in Fig. Combustion takes place under an excess of oxygen and the pressure is kept at 20 atm.

ASTM D346/D346M – 11

Price variations may also apply where standard quality indicators are not met. Grinding is not recommended because the heat generated would already drive off part of the volatiles.


No items in cart. When the ml calibration mark has been reached stop and weigh the charcoal fines. The charcoal maker engaging in export business may rely on his partners abroad, who are normally well equipped, and have capable staff to deal with problems which arise and provide customers with advice. It is not necessary to detail all the standards which are used but merely to indicate a typical system. The conditions in the small retort are not very similar to continuous large-scale retort systems.

A correction can be made for moisture content to express ash on a moisture free basis. Content only available by subscription. For charcoal and charcoal briquettes. In the case of solid wood, pieces of an approximate size of 5 x 5 satm 5 cm.

Prepare sample as above. Crush sample in a porcelain mortar and accurately weigh 3 grammes. Continue procedure as described for raw material above.

The retort is filled to about 0. After ignition, the calorimeter has to be shaken for about half an hour. Accurately weigh grammes of dried sample and put it on screen No. Standards for charcoal testing are derived from fuels such as coal or coke and, in some cases, are modified to apply specifically to charcoal analysis.

Remember me for one month. Enter your personal account email address to request a password reset: Link to Active This d436 will always route to the current Active version of the standard. The test would be done by contract with a commercial testing authority, perhaps a university.


Shake the whole screen set for two minutes. Register for a trial account. No further reproductions authorized.

The value for the fixed carbon is calculated as follows: The procedure can be facilitated by using a machine for the shaking. The charcoal is first sieved by hand to remove material which passes a 1.

The effect of tumbling on the charcoal is tested as follows. The most common set is: This is to prevent the finer charcoal cushioning the effect of rumbling on the coarse material during the test. Used for charcoal briquettes. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Accurately weight one gramme of the powdered sample in a platinum preferable or porcelain crucible with a lid with the following dimensions: A white precipitate of barium sulphate will immediately appear.

Large consumers, such as the steel aastm electrical industries, have their own quality control laboratories staffed by trainee operatives. Pour the charcoal sample as received from the plant, or storage d436 little at a time into a ml calibrated cylinder. Drying and weighing procedures as above.

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